how to form .cleaned data in class based views in django
In Django, the .cleaned_data
attribute is used in class-based views to retrieve the cleaned form data after validation. Here are the steps to access the .cleaned_data
in class-based views:
Create a form class: Start by creating a form class that inherits from
forms.Form
orforms.ModelForm
. This class will define the fields and their validation rules.Define the
form_valid()
method: In your class-based view, override theform_valid()
method. This method is called when the form is valid and ready to be processed.Access the cleaned data: Inside the
form_valid()
method, you can access the cleaned form data usingform.cleaned_data
, whereform
is an instance of your form class. This attribute returns a dictionary with the cleaned data, where the keys are the field names and the values are the cleaned values.Perform further processing: Once you have accessed the cleaned data, you can perform any additional processing or save the data to a database.
Here's an example:
from django import forms
from django.views.generic.edit import FormView
class MyForm(forms.Form):
name = forms.CharField(max_length=100)
email = forms.EmailField()
class MyFormView(FormView):
form_class = MyForm
template_name = 'my_template.html'
success_url = '/success/'
def form_valid(self, form):
cleaned_data = form.cleaned_data
# Access individual cleaned fields
name = cleaned_data['name']
email = cleaned_data['email']
# Perform further processing or save the data
# ...
return super().form_valid(form)
In this example, MyForm
defines a form with two fields: name
and email
. The MyFormView
class is a subclass of FormView
and sets the form_class
, template_name
, and success_url
. Inside the form_valid()
method, the cleaned form data is accessed using form.cleaned_data
. You can then access individual cleaned fields by their names.
Note: It's a good practice to validate the form using the is_valid()
method before accessing the cleaned data to ensure that the form data is valid.